Intelligent Digital Pressure Sensors and Transducers Based on Universal Frequency-to-Digital Converter (UFDC-1)
Sergey Y. Yurish · 2005
describes a design approach for digital pressure sensors and transducers. Practical realizations are based on the Universal Frequency-to-Digital Converter (UFDC-1). By eliminating the need for ADC, the frequency (duty-cycle or PWM)-to-digital conversion schemes reduce the systems complexity. The results of such design approach are highperformance single-chip pressure sensors with truly digital output (RS-232 interface) or bus output (SPI or I 2 C) at significant reduction of production cost, time-to-market and simplification of the design process. Practical examples of direct interfacing of frequency, PWM and duty-cycle output pressure sensors and transducers to the UFDC-1 are given.